/* Copyright (C) 2000 MySQL AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#include "mysys_priv.h"
#include <m_string.h>

/* Returns full load-path for a file. to may be = path */
/* if path is a hard-path return path */
/* if path starts with home-dir return path */
/* if path starts with current dir or parent-dir unpack path */
/* if there is no path, prepend with own_path_prefix if given */
/* else unpack path according to current dir */

my_string my_load_path(my_string to, const char *path, const char *own_path_prefix)
{
  char buff[FN_REFLEN];
  int is_cur;
  DBUG_ENTER("my_load_path");
  DBUG_PRINT("enter", ("path: %s  prefix: %s", path, own_path_prefix ? own_path_prefix : ""));

  if ((path[0] == FN_HOMELIB && path[1] == FN_LIBCHAR) || test_if_hard_path(path))
    VOID(strmov(buff, path));
  else if ((is_cur = (path[0] == FN_CURLIB && path[1] == FN_LIBCHAR)) || (is_prefix((gptr)path, FN_PARENTDIR)) ||
           !own_path_prefix)
  {
    if (is_cur)
      is_cur = 2; /* Remove current dir */
    if (!my_getwd(buff, (uint)(FN_REFLEN - strlen(path) + is_cur), MYF(0)))
      VOID(strcat(buff, path + is_cur));
    else
      VOID(strmov(buff, path)); /* Return org file name */
  }
  else
    VOID(strxmov(buff, own_path_prefix, path, NullS));
  strmov(to, buff);
  DBUG_PRINT("exit", ("to: %s", to));
  DBUG_RETURN(to);
} /* my_load_path */
